Accession Number : AD0707282

Title :   COAXIAL TURBULENT JETS,

Corporate Author : BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Personal Author(s) : Champagne,F. H. ; Wygnanski,I. J.

Report Date : FEB 1970

Pagination or Media Count : 47

Abstract : The flow field generated by two coaxial jets was investigated experimentally with hot-wire anemometers. The area ratio between the external and internal nozzle was varied as well as the velocity issuing from each of the nozzles. The distribution of the mean velocities, turbulence intensities, and shear stresses were determined for the various cases. The development of the flow field and its approach to a self-preserving state is discussed. The Reynolds numbers based on the nozzle diameters varied from 0 to 100,000 and the velocities were low enough that the flow can be considered incompressible. (Author)

Descriptors :   (*NOZZLE GAS FLOW, FLOW FIELDS), (*JET MIXING FLOW, TURBULENCE), SHEAR STRESSES, VELOCITY, DISTRIBUTION, REYNOLDS NUMBER, INCOMPRESSIBLE FLOW

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE